Colorectal cancer presenting as bone metastasis

Area of Science:

• Oncology
• Gastroenterology
• Skeletal Metastasis Research

Background:

• Bone metastasis is an uncommon complication of colorectal cancer, occurring in 3.7-11% of cases.
• Isolated bone involvement and presentation with bone metastasis are exceptionally rare.
• This study focuses on the rare subset of colorectal cancer patients diagnosed with bone metastasis.

Purpose of the Study:

• To investigate the demographic features of colorectal cancer patients with bone metastasis at initial presentation.
• To analyze carcinoembryonic antigen (CEA) levels, bone involvement patterns, and survival outcomes.
• To identify prognostic factors associated with survival in this specific patient group.

Main Methods:

• Retrospective analysis of a tumor registry from 2008-2013.
• Identification of colorectal cancer cases presenting with bone metastasis.
• Kaplan-Meier survival analysis and log-rank testing were employed.

Main Results:

• Ten cases of colorectal cancer with bone metastasis at presentation were identified out of 410 patients.
• The median age was 41 years, with a male predominance (7:3 ratio).
• Extraosseous and liver involvement were correlated with decreased survival.

Conclusions:

• Colorectal cancer patients presenting with bone metastasis are often younger males.
• The presence of extraosseous disease and liver metastasis are poor prognostic indicators.
• Early identification and management of bone metastasis in colorectal cancer are crucial.